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Unformatted text preview: upon the medium in which the wave propagates. The speed of sound , for example, is faster the denser the medium. The speed of sound in air also depends on the temperature (in Celsius) as: Properties of Waves v = 331 + 0.6 T C m/s Properties of Waves The speed of light (in a vacuum) is 3 x 10 8 m/s. It is slower in other media. The speed of waves on a string depend on the string tension T and mass per unit length . What happens when we combine more than one wave? The principle of superposition says we just add the amplitudes directly to find the resultant wave. Superposition The phase of one of the waves could be different from the other. Phase is the angle within the cycle that one trails or leads the other Superposition y = A sin( t + ) When waves are completely out of phase (that is they differ by 180 or radians), they may completely cancel! Superposition...
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This note was uploaded on 05/23/2011 for the course GSCI 121 taught by Professor Niculescu,m during the Summer '08 term at James Madison University.
 Summer '08
 Niculescu,M

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